chore: address non-blocking review nits from #27 and #30

[smartwatermelon]

Summary

Wraps up the three non-blocking issues filed by the pre-merge analyzer on the recent keychain PRs:

• prep-airdrop.sh prints Provisioning... before checking token existence #28 — `prep-airdrop.sh` printed `Provisioning...` before the nil-check, so operators saw a misleading line followed by a warning when the dev Keychain lacked the token. Moved the echo inside the success branch.
• CLAUDE.md should document provenance of opp command #29 — `CLAUDE.md` referenced `opp` without provenance. Added a note that it's a local shell function from `~/.config/bash/1password.sh` (dotfiles), not a standard tool.
• Add inline comment clarifying -u flag semantics in security set-keychain-settings call #31 — `first-boot.sh` used `security set-keychain-settings -l -u` for the no-timeout effect, which is non-obvious per the man page (the no-timeout comes from omitting `-t`, not from `-u`). Added an explanatory comment.

Closes #28, closes #29, closes #31.

Test plan

• `shellcheck -S info` clean on both shell files
• Local code-reviewer + adversarial-reviewer pass
• Post-merge: next fresh target provisioning confirms behavior unchanged

🤖 Generated with Claude Code

[claude]

PR Review: chore: address non-blocking review nits from #27 and #30

Three focused changes, all low-risk. Reviewed against the diff only.

prep-airdrop.sh — echo moved inside nil-check (line 671)

Improvement, no regression. Moving the echo inside the if block means the message is now printed only when provisioning actually occurs. Previously it printed unconditionally before the nil-check, so operators running on a machine where the dev Keychain item was absent would see the message followed by silence — suggesting work happened when it didn't. The fix makes the log truthful. Logic is unchanged.

scripts/server/first-boot.sh — inline comment on security set-keychain-settings flags (after line 491)

Documentation only. The added comment correctly explains why -l -u without -t N produces lock-on-sleep with no idle timeout: -u enables the idle-lock feature but the timeout is left unset, which security treats as disabled. This matches the existing show_log message. No code touched.

CLAUDE.md — opp provenance note (after line 36)

Documentation only. Clarifies that opp is a local shell function from dotfiles (~/.config/bash/1password.sh), not a Homebrew or macOS tool. Important context for anyone running dev commands cold.

Non-blocking observations: None. All three changes are tight and correct.

VERDICT: PASS